Small Scale Offgrid Solar PV: Installation Manual
D. Comissioning.
Connect the Solar Panel cables to the charge controller.
Connect the DC load circuit to the charge controller.
Handover the system to the client.
General Installation Requirements
It‟s important that the cables and equipment are made to look neat. Horizontal and vertical
cables should be straight and kept out of sight above beams etc. Where cables run the same
way it‟s preferable to install them together.
Cable splices should be meticulously carried out to minimise risk of short circuits. They should
be completely covered with insulation tape.
All cables should be mechanically supported to a high standard. It‟s better if they are run via
the highest possible path in order to be out of reach. Cables should be clipped at least every
meter. Be very careful when installing the clips to avoid scratching/ puncturing the cable.
Take great care to respect polarity throughout the whole installation. Twin cable in Guatemala
usually has white insulation for both conductors. Quetsol‟s policy is to use the corrugated side
as the positive. This means that the negative conductor is the cable with smooth insulation,
sometimes printed with text.
Positive
Negative
If the cable has two colours, then white is used as the positive and black as the negative. It‟s
preferable to mark the polarity of splices with insulation tape (red for the positive cable and
black for the negative.) The 6 cables connected to the Regulator should also be labelled with a
ring of insulation tape, and the points of connection to the battery (at least the positives.)
Labelling polarity
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